Shade roller



Aug. 21, 1928. 1,681,767

J. GOODMAN ET AL SHADE ROLLER Filed Aug 1927 ,cost.

Patented Aug. 21,:1928Q UN T D TATE PATENT, ,0 FFIcE-l JOSEPH GOODMAN,on WHITNEYViLLE, AND WILLIAM A. SOMERS, on HAMDENQCON- NECTICUT,"assrenonsro .THE-MTJCARMELMANUFACTURING co rANY, or]

' MOUNT cARM'EncoNNneTrcUr; AlcoRroRaT-IoN on CONNECTICUT.

I simian RoLLER.

Application filed August 1, 1927 S eri aljfio. 209,694;

1 This inrention relates to shade rol1ers,ai1d

has for an object to providea structuref foi" rollers of thistypewhichwill require less rasterial, and therefore, may be made at alower it is are a sweeter as inie senro se} videa structure inawhich thecoil-springl ter i operating the-roller w ll have a greater range;

of movement for a givenlength of spring than in the constructions new.generall tj employed, and thereforegthe spring is less liable to betaxed to its'liinit, or that is, is less liable to be tightened tootight, and therefore 1s less liable to breakage. 4 g a.

7 It is also an object ofthe invention to pro Vide an improved pawlconstruction."

NVith the foregoing and other objects in View, We hare devised theCODStI'UCtlOIi illustrated in the accompanying drawing donning a part ofthis specification. In this drawing,

VFig. 1 is alongitudinal sect-i on through our improved roller. s

Qand secured that they will not rattle in oper- -13 seoured'to thewindow l ra-nae or body of the;

in thereleasedposition. q, i a Fig; 5'is adetail section substantiallyon v p i endofthe roller: The curved endineinbers 26 "fit the inside oi'theflroller, and the Hat side A vconnectingthe's'e ends seats over theribs 20 section ofthe spring "end: i p v to the-roller.

c Fig. 6 is a Verticalsection substantially" on s FigQ 2 is alongitudinal section of the pawl end of the :roller on an enlarged scalein a plane at right angles to theplane of Fig. 1, the

a section being substantially on line of Fig. 1.

Fig.

on line 33 of Fig.1 showing the pawls in the securing position.

Fig. 4 is a similar: View showing the pawls lines-+5 Fig.1. s

line 66 ofFig. 5.

Fig. 9 is an end eleiation thereofland mobile use as the eleinentsareflso inounted ation'. It is however; not limited tojthis'uj-Le. Asshown it comprises; two brackets12-and car by suitable screws 14.1Insthe present conv V struction theseebrackets arefforlned of sheet;metal open at -tl ;1eir,1 n;ner s des which is closed dis a transversesection substantially plate 1511\The' left handb raclret 13 inay LfV'merely a roundopening for pivot stud -gei iethelflattened' end "17 ofthe stud 18 so that; this stud is held stationary. The roll comprises abodylneinber :19 of tubular sheet up a fiat stripfof ine-talfthe sideedges of which are overlapped and folded as shown in Figlb, and as iti's desirable' to have the outer surface substantially cylindrioal thisjoint forms a rib 20 on the inside o-fthe roll and extendinglongitudinally thereof. Atlits left end a cupped member 211s secured inthe end of the roll whilethe plate Z Qfis seated on the outer surfacefof this cupped member and has its periphery rolled 7 over the edge of thecupped 1ne1nber,- as shown at 23, to secure the two members together.vThese two members have openings for passage of the pivot stud 16,andthe space between themembers may be filledwithia suitablefiibre 24which will carry sufiicient'oil for lubrication and will $1130 preventrattlingofftlie end nienr berson the studs n a its opposite endtheroller is carried by a yoke This yoke is preferably a strip 01 metalsubstantially'U-shaped as shown in Figs. 10 and 11, with circular endinen ibcrs 26having openings 27 torec-ei've the stationary member 18 andturn thereon, and thus a the member 18 forms a pivot'support for thisand is thus preventedi'roin turning relative \The open side ofthiscupped Ine nber'is closed hy'anend plate with its periphery rolledOverthe edgesof the cupped member,

as shownat This cupped member carries the pawls 31; There arepreferablythree of thesepawls althoughwe arenot limited to this iniI nber. Eachpawl issu'bstantiallyfL- shaped as shown having-a head atjone e'ndforming a hook 32while the tail portion is [curved substantially asshown corresponding This end of the roller is closedb i a 'cuppedlmember 28 which is secured to the roller by i any suitable means, suchas solder orpunchto a ecmvaurg of the sides; of'the cupped -agaiiist theaction of the spring. When the member. The side valls of this cuppedportion, however, are not made circular but :1Ilclude spaced fiatsurfaces 33 so that the side walls of this cup portion is, composed ofspacedalternately arranged curved and portions. The stud oixstationarymember. 18

is provided with a notch or recessproviding a shoulder 34 whichwvlienmounted is in the upright position andmay be engaged by the hook of anyone of the p awls a s shownin Fig. 3, to hold the roller againstrotation pawlisin this position the tailendfengag'es the head end oftliene st adjacent pawl'and torcesit against the head end of the thirdpaivl; which forces 'the'tail end of this lattermivlfbetwoen thethirdpayvl ai'idtl 'e' side wall of the cup as shoWninF 1g. 3. This see-I tiojii clamps the twose'cond pawls against the lit side alls of thecup, andalthough thepawls are loose Within tlie' cup when not [111 theholding position, that is, are not permanently attached to the, cup,this clamping action acts 7 to prevent relative turning of theciip withrespect to thepaivls'while' this position. lVhen the 'pawls f arereleased, hoii 'ev'er,"the cup may turn relative to the p'aivls'. Taincreasetheholding action of the pawls the flats 33 are provided, andtherefore, it is not j necessary to relyalone on the frictionalengagem'ent of the outer'curved edges of the pa'wls against the curvedside Walls of the "cup. I It will, ofcourse b'e understood that f.t'heroller is operated to the'riglit'o'r clockwise, as viewedin'Fig's.-3,and 4, the payvls will be forced outwardlyfand permitrotation of the roller, and if it rotat'es rapidly counterclockwise orin thejopp'osite direction they will be held in theouttvard or releasedposition by centrifugal action untilthe speed is suiliciently reduced topermitone bfntlie is a coil spring 36 located in tlieioller. At

one end it is ermanently ecured to the and or stationary member 18, aconvenient means paivls vto drop with its hook inengage'iiienti with theupright shoulder and under action'of the spring clamp the pawls asindi-J Y eated abov a i The shade is indicated atf and thets'piing ofsecuringbeing to force the endof thestud into one end of the sprinsomewhat larger in diamaerthan thelnormal diameter of the spring so asto tend to spread the spring radially, the spring Will,

therefore, firinly clamp the stud. Tl eend' turn 37 of the spring maythen bejforee'd intoftlie glfOOiSS in the sun asa isvemthe s ringpsiiisg away. At ts, oppo it e'end the spring is connected to a block39. This my be a so'lid block'f or a block of any suitable material, buta cheap and convenientfjc'onstruction is tomake it of sheet metal ,by

stamping and cupping'a suitable blank. The closed end of this cupis'slit and the metal;

between the slits is forced laterally tor'eceive if the roller;

12, the stud being the end of the spring after which it is clamped onthe endvof this spring to permanently hol it. One side Wall of thecupped block is vprovided With a, longitudinal groove 41 toreceivetherib 20 on the inner iwall'of theroller." Cooperation of thisrib and groove will prevent relative turning 'ir'ioveinent betweentheroller and the block but will leavethe block free to slide .longi--tiidinally of the roller; asthe length of the spring varies due tovariations in the tension of the spring asthe roller is operated.Tli'ere- -toi"e, as the inner'endo'f the springi's free to movelongitudinally aslthe tension of the spring varies: there is no tendencyfor' this spring to buckle, and it is, theretore,not" necessary toextenda rod longitudinally through this spring to provide a support ;or

guide and prevent this buckling as is now "common practice. lW'e, the'reforefsav'e' c fi siderable material besides leaving the springfreer-so that a spring of a iven length Will have a greater range thanlie're it is mounted on a longitiitlinallyj extending limitin i od, andis not as quickly taxed to its limit.

Therefore, in o'peratijon it is much less liable to be tightened tootight and broken 'f'orthis I i'eason, theflfloating block'39 doing. awaywith any tendency ofthe spi' ingtobuelile or Weave laterally; It is,however, desirable to line the inside of the roller with a suitablefibre" lining AQofpaper or similarmaterial to pi'event noise shouldjarring "of the fvehiele cause the sprin g I will, also, be apparentthat the; length of the spring andfits mounting does not varyfordiflt'erent lengths of rollers, and therefore,'these springs withtheir asso-- ciated elements may be assembled in quantityandinerely'mountedlinthe rollers of the len ths desired.

aving thus set invention, what'we claiiii is i v i '1. In a shaderoller,a stationaryinember having a notch or shoulder, aii e nd ineinberhaving a: recess about said stationary member to swing against the sidesforth the; nature of our providedvvithan outer Wall comprisingalternately arranged fiat;v and curved portions, a

plurality or pawlsloosely mounted-in said recess so that theend membermay turn relaf tii e to said pa 'vvls, said paivls having hooks adaptedto engage in s'aidrecess and, tails 2. In a shade rolleniatubularmember, stationaiy member atone end thereof, paivl re taining i'neansmovable with: the tiibu "member. adapted to clooperate' vvith saidstationary nernber to prevent turning in one direction, a torsioi'ialspring, block secured to one end; of the spring Within the tubnlarmember, said block being free to slide longitudinally of the tubularmember as the tension of the spring varies, and coacting means on themember and the block to preventrelative turning movements so that thespring rotates said member in one direction by r0- tating the block;

3. In a shade roller, a tubular roll, a stationary element atone endonwhich the roll is mounted to turn, a torsional spring within the rollconnected at one end to said element, a block within the roll connectedto the other end of the spring'so as to be rotated thereby, cooperatingmeans on the roll and blockto prevent relative turning movements betweenthem so that rotation of the block will rotate the roll but arranged topermit free sliding movements of the block longitudinally of the roll asthe tension of the spring varies, and a pawl catch adapted to cooperatewith said stationary member to hold the roll against rotation underaction of the spring. 7

4. In a shade roller, a tubular roll, a stationary element at one end onwhich said roll .is mounted to turn, a torsional spring within the rollconnected at oneend to said stationary member, a block within the rollconnected 7 to theother end of the spring so as to be rotated thereby, alongitudinally extending coacting rib and grooveconnection between theroll and block to prevent relative turning movements between them andpermitting relative longitudinal movements as the ten sion of the springvaries, and a pawlcatch adapted to cooperate with the stationary memberto hold the roll against movement under action of the spring.

5. In a shade roller, a tubular roll having a longitudinal rib on itsinner wall, a stationary member at one end on which said roll is mountedto turn, a coiled torsional spring within the roll connected at one endto said stationary member, a block secured to the other end of thespring so as to be rotated thereby and having a longitudinal groove toreceive said rib to permit longitudinal movement of the blockwhilepreventing its turning in the roll,and'a pawl catch adapted to preventturning movements of the roll under action of the spring.

6.111 a shade roller, a tubular roll having a longitudinal rib on itsinner wall, a stationary stud at one end, a substantially U-shaped yokeforming a support within the roll hav ing hearings in its side memberson said stud, a coiled'spring within the roll securedat one end to saidstud, a block comprising a member 7 secured to the'ot-her end of thespring so as to be rotated thereby and having a longitudinal groove to'receivethe rib in the roll so that the roll but is held" againstturning, and a pawl catch carried by the roll and adapted to cooperatewith the stud to hold the roll against turning under action of thespring.

.60 the block is free to move longitudinally of T. In a shade roller, atubular rotary mema her, a stationary member at one end thereof, a.torsional spring within the tubular member connected at itsopposite'ends to the respective members so as to rotate the tubular c Intestimony whereof we afiix our signatures.

JOSEPH GOODMAN.

WILLIAM A. SOMERS. I

